The PuttyV2.fillOrder function does not validate that the msg.sender (order taker) is the same as the order maker, which might potentially lead to unwanted behaviour within the system. Order taker should not be the same as order maker under any circumstances.
https://github.com/code-423n4/2022-06-putty/blob/3b6b844bc39e897bd0bbb69897f2deff12dc3893/contracts/src/PuttyV2.sol#L268
Implement the necessary check to ensure that order taker is not the same as order maker.
